I didn't spot your question. The best way would be to contribute. :) We currently have virtkick-starter, a bunch of scripts that set everything up. You could try it out on Guix and improve if needed. https://github.com/virtkick/virtkick-starter
Oh, that's relatively easy at the moment. Put your distro in these two files. ISO will be autodownloaded by `virtkick-starter` script, and the distro will appear on VM create screen. It'll be configurable in the settings in a month, of course. http://goo.gl/u1LKwihttp://goo.gl/j1j80f